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  1. Jet Boats
    Hey jet boaters, my Brother in law's 21 silhouette deck, 454, mild build pump gas motor seemed as though he was losing oil pressure, as it came up to operating temp at cruising RPM of around 3500 he would get approx 10 to 20 psi oil pressure which is pretty low, when at idle pressure would come...
  2. Parts for Sale
    wts a Watts brand new water pressure reducing valve. Regulate your in coming water to the motor. Make an offer plus shipping SOLD Jim
  3. Jet Boats
    Kinda stumped. Jet boat is overheating. Not getting alot of water pressure if any out of pump to engine. Pulled lines. Flushed everything out. Looked into pump housing outlet and it looks clean. Intake area looks clean as well. Back flushed everything. Still not getting water to the block. No...
  4. V-Drives
    Looking for a higher pressure water pump for my boat. I currently have a V-105 old pump on it now. Motor is a BBC with a 8-71 Superchager lake boat. I beleave that the water pump is finally giving up. Just seeing what pump would work the best or what everyone Is using.
  5. Jet Boats
    I am wanting to install an oil pressure safety switch for my fuel pump on my 454 BBC. How do I go about doing this? Do I use a T fitting and screw them both into the same port? Thanks for the help. If anyone has pictures that would be a huge help.
  6. Jet Boats
    If you wanted to try and lower the upper suction pressures just a little on a drag type jet boat, how would you do it and what effect would it have on performance if that was the only change? Boat has a R intake. Lets say you have an upper suction pressure of around 80 lbs at 130 mph and...
  7. Parts for Sale
    I have a used EFI fuel pressure gauge and sender unit. I converted boat to carb so I no longer need this. Looks and works perfect. $50.00 for both including shipping. This was a 2005 Livorsi gauge and has three wire posts to install. It does not use the newer Livorsi connector. Steve...
  8. GN7 On the Dyno
    I have asked this question before, but I am going to try again. I have a 540 big block Chev with an oil pressure issue. This is a bit of an ongoing problem, and I have received lots of information from various folks trying to help. Believe me, all the possible remedies they have offered, I have...
  9. Jet Boats
    I am new to the forum, Can some one post some links as to how I can measure the pump pressure after the impeller in the pump bowl. What type of gauge and fittings do I need? Also what pressure numbers can I expect to see? I am new to the jet pump world! I tried the search forum but nothing...
  10. Jet Boats
    So I took my new beast out for my maiden voyage today and promptly overheated... I think. Have a look here: Notice the two vinyl/reinforced tubes coming up either side. That's my "water in" from the pump. There is a valve in the back at the pump, which I opened. When I was sitting and...
  11. Jet Boats
    I seem to remember reading you guys using quikdata were using transducers for mph data collection. Are you guys just comparing gps readings to the voltage output or is there a mph transducer that is already set up volts vs mph ???
  12. Jet Boats
    Does anyone know what water pressure my jet pump puts to the engine. I have a 21 Daytona with b1 pump. I am instaling a oil cooler and worried about water pressure too it. Maybe someone else has installed an oil cooler on a jet boat and can help me. Thanks in advance fo the help.
  13. PB Open Water
    I'm in s. Cal . Who does it? How much$?
  14. GN7 On the Dyno
    Fuel pressure question: Fuel system loses pressure after sitting for 10 minutes or so. Verified by dash mounted mechanical fuel pressure gauge. Components as follows: Clay Smith mechanical pump Holley fuel pressure regulator HP 950 carb with fresh gaskets, floats and needle & seat. When on...
  15. Jet Boats
    Do 455 olds with Berkley jets have problems? I just spent the day with Stardust blowing thru 40 gallons of fuel with lots and lots of full throttle. No milk shake in my crankcase. Tell me why people are doing all kinds of "enginering" to control pressure thru the engine. I understand the...
  16. Jet Boats
    Round bottom 18' v-hull, any ideas on what would be ideal pump intake pressure or close to it might be? Right now I'm just under 30 lb. top and bottom, thanks.
  17. Jet Boats
    Hey guys, Just want to start off saying I've been reading these forums for years now and I can't say enough for the quality of people on here and the info thats provided. Time has come that I finally need to ask a question myself and hopefully get pointed in the right direction. First off I...
  18. Parts for Sale
    Pm me or you can call me 408-829-9195....Thanks..Brent
1-20 of 147 Results